4S 40A Lithium Battery Charger Protection BMS Board Li-ion Module 14.8/16.8V

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Description
100% Brand New and High Quality
The protection board uses a mature 4 string dedicated lithium battery protection chip, with high integration, high sensitivity characteristics, through the detection of the battery voltage, charge and discharge current and ambient temperature and other information on the battery overcharge, over discharge , Discharge over-current, short circuit, charge over-current, temperature protection and other real-time protection, but also through the external circuit to achieve the adjustment of the parameters.
4 packs 14.8V 16V 16.8V 18650 lithium battery protection board. This product is used for 4pcs 18650 lithium battery in series; charging current 1-2A; Suitable for Electric tools, hand drill, lithium drill.
Wiring sequence: B-, B1, B2, B3, B+ ;  P+ is charge/discharge positive. P- is discharge negative . C- is charge negative.
Parameter:
Num
Name
Specification
Value
1
Voltage
Charge voltage
16.8V
Single charge voltage
4.2V
2
Current
Continuous discharge current
0-18A
3
Overcharge protection
Overcharge single section detection voltage
4.2±0.05V
Overcharge protection delay
1S
Overcharge charge recovery voltage
4.13±0.05V
Overcharge protection release delay
20mS
4
Over discharge protection
Over discharge single section test voltage
2.8V
Over-discharge protection delay
1S
Single over-discharge recovery voltage
3.0V
Over discharge protection release delay
20mS
5
Overcurrent protection
Overcurrent detection voltage
0.1V
Overcurrent detection current
32±3A
Overcurrent detection delay
300mS±100mS
Recovery state
Automatic recovery
6
Short circuit protection
With or without short circuit protection
Yes
Short circuit detection delay
20mS
Short circuit detection voltage
0.8V
Recovery state
Automatic recovery after
Cut off Load
7
Temperature protection
Over temperature protection temperature
70±5℃
Over temperature recovery temperature
60±5℃
8
Power consumption
Working state
20uA (25℃)
Sleep state
6uA(25℃)
10
Internal resistance
Discharge circuit resistance
≤30±5mΩ
11
Size
Length * Width
34mm*34mm
Package Included:
1PC*4S Battery Charging Protection Board
Payment Method
Shipping Policy
Returns & Refund Policy
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Payment Method
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Shipping Policy
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2. Orders will be processed instantly and dispatched within 1-3 business days except hoilday, so we do NOT accept any email/message note after you place orders.
3. All package need to wait 30 days,Please take care it.Less than 30 days,we can't take a refund.
Returns & Refund Policy
All package need to
wait 30 days
(US only n
eed 7-10 days)
,
Please take care it.Less than 30 days,we can't take a refund
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If the item is defect when you receive it or you are not satisfied with it, please return it within 14 days for a replacement or money back. But the items must be back in factory condition. Please keep in touch with us and double check the return address before you return it.
If is item is defective in 12 months, you can return it to us. We will send you a new replacement after receiving the defective item.
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